Restorative for blemished moving-picture films.



D STATES PATENT OFFICE.

FREDERICK W. HOCHBTETTEB, OF NEW YORK, N. Y., ASBIGNOB T0 PAUL M. PIERSON, OF SOARBOBO-ON-THE-HUDBON, NEW YORK.

BESTORATIVE FOB BLEMISHED MOVING-PICTURE FILMS.

i ,i3il,680.

Ito Drawing.

To all whom it may concern:

Be it known that I, FREDERICK W. Hocn s'rsrrun, a subject of the Emperor of Germany, and a resident of New Xork, county and State of New York, have invented a certain new and useful Restorative for Blemished Moving-Picture Films, of which the following is a full, clear, and exact spec1- fication.

This invention relates to a mod1fied comosition of matter disclosed in my ending application for Letters Patent, serial y numbered 732365, and filed November 20, 191?.

In accordance with present methods in )ractice it is customary in exhibiting moving pictures to transmit the transparent film through a kinetoscope for prO ectmg the ictures thereof u on a curtain, or screen. The film being of a peculiar compositlon makes it susceptible o the like as it is directed through the mechanism, and the photography of the p1ctures on the film thereby becomes blemished by scratches, which produce flickers 1n the pictures when projected, and moreover the n-essure to which the film is sub]ected causes it to become hard and-brittle.

My invention has for its ob ect to overcome these objections by providing a composition of matter designed to be applied upon moving picture films when blemished in this manner by being adapted to remove from the crevices of the scratches the dust settled therein, and which tends to restore the transparency of the photography of the pictures by clearing the high ig ts and shadows thereof of all foreign substances as well as serving to restore the flexibility of the film.

This composition of matter consists of the following ingredients, combined in the r0- portions stated, viz:--a fatty base, suc1 as tallow, lard, bees wax, para iin, spermaceti, or the like (3 ounces; gum camphor, 5 drams; alcohol, (U. S. P. strcnglth) by weight, 2 ounces; sulfuric ether, S. P. stren th) by weight, ounce; glycerin, by weigit, 1

ounce. V

The gum camphor is first dissolved in a Specification of Letters Patent.

Application filed May 27, 1918. Serial No. 770,177.

attracting dust, or

Patented May 18, 1915.

suitable container in the alcohol, and the fatty base is then melted in a separate vessel at a moderate temperature. When the fatty base is in a melted state the glycerin is added thereto and the ingredients are thoroughly mingled in any suitable manner. The solution of camphor and the sulfuric ether are then mixed together, and after the mixture of the glycerin and fatty base has sufiiciently cooled this solution is incorporated therewith by agitation through the use of any desired method whereby a uniform emulsion is produced.

In usin my composition for restoring moving picture films when impaired, as above described, a quantity of the emulsion 18 applied by any suitable means to form a coating upon the film, and sufiicient frict10n is employed to cause the emulsion to penetrate the crevices of the scratches therein as well as softening the texture of the film. By the use of a pad, or buffer the excess of the coatin of emulsion is removed from the film which in turn will free the scratches and the pictures of all particles of dust and foreign substances so that the normal clearness of the pictures will to a large extent be renewed, and the flexibility of the film will also be restored.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The herein described restorative for blemished moving picture films comprising in combination, a fatty base, camphor, alcohol, sulfuric ether, and glycerin, substantially as set fortln 2. The herein described restorative for moving picture films comprising in the following proportions, a fatty base six ounces, camphor five drains, alcohol two ounces, sulfuric ether one-half ounce, and glycerin one ounce, substantially as described.

This specification signed and witnessed this twenty-sixth day of May, A. I). 1913.

FREDERICK W. llOOllS'l l'l"llllt.

Witnesses:

Ron'r. B. Anao'rr, M. DERMODY.

copies of this patent may be obtained (or five cents each, by addressing the Commissioner of Patents,

wuhingtomnfl. 

